Cheerful orange or yellow daisy-flowered annual that self-seeds reliably and flowers from late spring until hard frost. A traditional companion plant in vegetable gardens.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 2–11 | −45.6 °C to 10 °C | Zones where it can be grown as an annual — not a frost-tolerance rating |
| RHS hardiness rating | H4 | −10 °C to −5 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 2–9 | −40 °C and warmer | Zones where it can be grown as an annual — not a frost-tolerance rating |
| Australian (ANBG) zone | Zone 1–7 | −15 °C and warmer | Zones where it can be grown as an annual — not a frost-tolerance rating |
As a tender annual, Calendula (Pot marigold) doesn't overwinter — the zone range shows where the growing season supports it. See the RHS rating for its actual cold tolerance.
Growing notes
- Forage for hoverflies and lacewings — both important aphid predators
- Edible petals, traditional addition to salads and rice dishes
- Skin-healing herb — a key ingredient in traditional salves and creams
- Distinct from French marigold (Tagetes) despite the shared common name
- Always consult a qualified medical or herbal practitioner before using any plant medicinally
Categories
Related plants
Cross-check Calendula (Pot marigold) against your zones